Looking at Zhang Sanmei's innocent look, it felt like that.

However, the potassium cyanide detected in the chocolate is the same as the potassium cyanide in Yuan Yang's stomach, which indicates that Yuan Yang is indeed potassium cyanide poisoning, which is understandable.

Considering the results of the previous forensic examination, Gu Chen directly took the faxed test report to Zhang Sanmei and said:

"This is the test we got from the technical department of the city bureau, which shows that Yuan Yang's stomach has extracted chocolate containing potassium cyanide, and this chocolate is exactly the box you gave to Yuan Yang last night. ”

"What...... What?" Zhang Sanmei laughed twice and said lightly: "How is it possible?" I just wanted to apologize to Yuan Yang, on the way to the dinner, I bought a box of chocolates by the way, how can it contain any potassium cyanide?"

"That's what I'm going to ask you, you bought the chocolate. Lu Weiwei said.

"Comrade policeman. Zhang Sanmei looked at the three of them, feeling a little incredible, and the whole person also defended: "If you want to say that Yuan Yang is chocolate poisoning and there are test results, then I have nothing to say." ”

"But if you want to say that the person who poisoned Yuan Yang is me, then I firmly oppose it. ”

"It's impossible that I bought a box of chocolates, and toxic substances were detected in it, and I still have to carry this pot, so the chocolate seller is not guilty?"

"What's more, I don't know what that potassium cyanide is, how could I get this potassium cyanide on chocolate in such a short period of time? ”

also listened to Zhang Sanmei's self-justification, it seemed to be completely like that, Gu Chen frowned and did not speak.

And Officer Wang and Lu Weiwei also had some doubts after listening.

Indeed, if it was really as Zhang Sanmei said, she just bought a box of chocolates casually on the way to the dinner place, then in a very short period of time, it was indeed impossible to inject potassium cyanide into the chocolate.

But the question now is whether Zhang Sanmei has ever tampered with this box of chocolates during the time she bought chocolates and came to the dinner place, which is the key to the case.

After Gu Chen whispered to Officer Wang and Lu Weiwei, the three of them decided to go to the dispatch room and let Zhang Sanmei stay in the interrogation room temporarily.

Dispatch room.

According to Gu Chen's request, several police officers retrieved the video of the night of Zhang Sanmei and Yuan Yang's dinner.

"It's true that the dinner place is Juxianzhuang?" asked a first-class superintendent.

"That's right, it was last night, probably ...... It looks like around seven o'clock. According to the previous oral statements of Yuan Xiaomei and Zhang Sanmei, Gu Chen probably locked the time in this time.

The first-class superintendent of the dispatch room is also very skilled in operation, and he quickly found the surveillance video of the road outside Juxianzhuang.

According to the photo of Zhang Sanmei provided by Gu Chen, he accurately found the relevant video, and directly extracted it: "Let's see if it's this person?"

"That's right, it's her, please ask Senior Brother to extract the video on the big screen. Gu Chen said.

"No problem. The first-class superintendent obediently did so, and directly extracted the surveillance images from the computer to the big screen in the dispatch center.

In an instant, the video of Zhang Sanmei appearing from the right side of the road is clearly visible.

Gu Chen narrowed his eyes, and used his specialization-level observation power to carefully examine the chocolate in Zhang Sanmei's hand.

At this moment, the chocolate packaging box can still be clearly seen, which is attached by a layer of reflective film.

This is exactly the same film on the chocolate box that everyone found from Yuan Yang's house before.

"In this way, this box of chocolates was sealed and packaged with a transparent film, and Yuan Yang didn't open it until he went home?" Gu Chen looked at Officer Wang and Lu Weiwei beside him.

The two seem to have this in mind......

Lu Weiwei said: "Could it be that it was the chocolate shop that poisoned it?"

"Senior brother, can you show us the monitoring before Zhang Sanmei came to the dinner place. Gu Chen was polite again, and he had already begun to think about the situation between the chocolate shop and the dinner place.

As a member of the criminal investigation team, there must be no mistakes in all kinds of clues.

Although the fact that chocolate contains potassium cyanide can be obtained from the technical department of the municipal bureau before, everyone seems to have doubts about whether Zhang Sanmei was poisoned.

The first-level superintendent agreed quite happily, and immediately agreed: "This is very simple, I only need to link the previous surveillance footage according to this video, and I can capture the path of this Zhang Sanmei." ”

"It's for the best. Officer Wang said.

Soon, the first-class superintendent once again skillfully operated and checked all the road videos that Zhang Sanmei passed by.

What is surprising is that Zhang Sanmei only held a chocolate box in her hand from beginning to end, and there was no special processing of chocolate.

And all the monitoring can be traced all the way back to the chocolate shop......

"It's weird. Gu Chen clasped his hands to his chest and said with some doubts: "Zhang Sanmei has never touched the packaging since she came out of the chocolate shop, and she has not even dismantled it, how can she poison the chocolate? ”

"Is it really a store?" Lu Weiwei felt extremely frightened, and seemed to have a little disbelief.

Officer Wang said: "It's useless to say anything now, Yuan Yang's poisoning is a fact, even if Zhang Sanmei didn't poison it, then I think this store can't get out of it, maybe the clerk did it in the store." ”

In other words, Zhang Sanmei has moved her hands and feet before, but she may temporarily store the chocolates she has used in the store. ”

"And wait until the day of the dinner to take out the box of chocolate containing potassium cyanide from the store, which is also in the past. ”

"It feels a little unreliable. Gu Chen said.

Officer Wang was stunned for a moment: "Why?"

"Senior Brother Wang, didn't you listen to Yuan Xiaomei yesterday? They set the location of the dinner in Jiangnan City, and it was decided after work, which shows that they did not discuss it at all, but only made a temporary decision and chose to put the casual meal in Juxian Village in Jiangnan City. ”

"If this dining place is set temporarily, how did Zhang Sanmei know it in advance?"

was also asked by Gu Chen, Officer Wang was stunned for a moment, and he couldn't answer for a long time.

Lu Weiwei also nodded in agreement: "Senior Brother Gu is right, but if all the problems can't be explained, then there seems to be something wrong with this chocolate shop, could it be that they did it?"

"I can only go in person. Gu Chen said.

Officer Wang thought back and forth at the scene for a few seconds before agreeing: "Okay, then let's hurry up and go to this chocolate spot to see the situation." ”

The three of them did what they said, and after leaving the dispatch room, they drove directly to their destination.

Near the intersection of a commercial block, Gu Chen parked his car in a parking space, and then walked into the business called "Eros Chocolate Shop" with Officer Wang and Lu Weiwei.

With the triggering of the door induction, a "ding dong" sound soon sounded.

A female clerk wearing a barista's uniform immediately walked over with a smile on her face when she saw three policemen coming: "The three of you are here to buy chocolates, right? We have many varieties here, all kinds of prices, and domestic imports, which one do you need?"

"We're not here to buy chocolate. Gu Chen directly and kindly refused, and second, he took out a photo of the third sister and said, "This person once came to your store to buy chocolates last night, do you remember?"

"Last night?" When the female clerk heard this, she squinted her eyes directly, and after looking at the photo, she shook her head and said: "I wasn't here last night, you guys wait, I'll call my colleague, she was on duty yesterday." ”

"It doesn't matter. Gu Chen said lightly: "I'll wait here." ”

"Uh-huh. The female clerk also politely said "uh-huh" twice, and then went to the front desk to find a colleague.

Taking advantage of the gap, Gu Chen hurriedly looked around and observed this chocolate shop.

Judging from the decoration style, it looks like a high-end store, and with the explanation of the clerk, Gu Chen can probably understand from this information that this is a franchise store that specializes in selling chocolate food at various prices.

But these are not the focus of Gu Chen's attention, the point is that Gu Chen found that the store is equipped with a camera, which can capture all corners of the store, so he smiled quite satisfied.

"Hello Comrade Policeman. The female clerk just now called another tall and thin female colleague over, smiled and said, "This is the colleague on duty last night, what do you want to ask her?" ”

"Thank you. Gu Chen was polite, and then took Zhang Sanmei's photo in his hand: "This person, at about half past six last night, once came to your store to buy chocolates, do you have any impression?"

"She?" The tall and thin female clerk also scratched the back of her head, and only after a few seconds of recollection did she say: "I remember, she came to the store yesterday and bought a box of imported chocolates on the OEM brand." ”

"Huh?" Lu Weiwei was a little puzzled, and asked again: "What the hell is the OEM?"

"It's a foreign brand, but it's actually produced by a domestic manufacturer, but the packaging is all in English, which makes people feel like imported chocolate. The female clerk said.

I'm afraid that Lu Weiwei doesn't really understand, so another clerk also smiled: "In fact, many customers on our side want to give gifts, and they will first give this kind of product, some are imported chocolates, the price may be a little expensive, and some customers are reluctant, so we will recommend this kind of chocolate." ”

Of course, the price of this kind of gift chocolate is much lower than that of imports, and it is also more face-saving when it is given out, so it is also the main product in our store. ”

"What kind of one is it?, can you show it to me?" Gu Chen said.

"Yes. The female clerk nodded, walked directly to the shelf, took down a box of heart-shaped chocolates, and handed them to Gu Chen: "This is the kind of chocolate I said." ”

Gu Chen held it in his hand and observed it repeatedly, the chocolate box was covered by a transparent film, and all the locations were sealed, which made Gu Chen even more suspicious.

After seeing Gu Chen's thoughts, Officer Wang hurriedly asked, "Is this chocolate you sell here all sealed?"

"Could it be...... Isn't it?" The female clerk also felt inexplicable, and asked Officer Wang: "Comrade policeman, do you want to buy the bulk ones? ”

"I didn't mean that, I mean, are all your types of chocolates sealed?" asked Officer Wang again.

The two clerks looked at each other and nodded.

"I see. Officer Wang crossed his waist, and then pointed to the surveillance: "Your monitoring here, can you call it up for me, just call up the part where the female customer bought chocolate yesterday." ”

"Are you going to investigate the case?" also looked at the three of them, especially Officer Wang, who felt like a big leader, while Gu Chen and Lu Weiwei were more like graphic models.

Therefore, the two female clerks are also curious, don't want to.

Officer Wang nodded: "That's right, it's a murder case, and the suspect is this woman, so please cooperate." ”

"Murder?" When the two women heard this, they were instantly stunned.

After a few seconds of sluggishness, one of the clerks said, "I know, you come with me, I'll show you." ”

also led Gu Chen, Officer Wang and Lu Weiwei, and everyone came to a small office together.

This is where the clerk works, and there is only room for a desk, on which is a computer, surrounded by various documents.

It is estimated that it is an office space used for bookkeeping in the store.

After the female clerk operated awkwardly on the computer, she found the video of Zhang Sanmei coming to shop yesterday.

So he took the initiative to get out of the way and said, "Comrade policeman, do you want to see if it's her?"

"That's right. Gu Chen sat down in his seat and began to watch the video of Zhang Sanmei's activities in the store repeatedly.

What Gu Chen didn't expect was that Zhang Sanmei seemed to have only taken a very short time from entering the store to purchasing the transaction.

And it was also under the promotional explanation of the clerk that she chose the OEM chocolates on the shelf, paid directly and left.

During this period, there was no other time to do chocolate in the store.

According to Gu Chen's previous observation in the dispatch room, after Zhang Sanmei left the chocolate shop, the surveillance footage and time on the road completely matched.

In this way, it seems that Zhang Sanmei has no time to poison at all, which means that the poisoning has nothing to do with Zhang Sanmei.

Gu Chen frowned, turned his head and asked the female clerk: "You kind of OEM chocolate, has anyone ever had a stomach trouble after eating it, or has a bad body?"

"Hehe, comrade policeman, you really know how to joke. The female clerk was a little puzzled, but she still controlled her emotions and said: "Our chocolate is a snack, and you also know the ingredients of chocolate, how can there be the kind of symptoms you said?"

"And we don't sell expired chocolates here, they are all recently produced, with quality and quantity, and there is no such situation as you said. ”

"I see. Gu Chen was puzzled, took a box of chocolates in his hand and asked, "Just this woman just now, has she ever been to your store except for yesterday?"

"Well...... I don't have an impression, maybe I haven't been here, because she didn't even have a membership card, so she should have come to buy it randomly. The female clerk said.

Lu Weiwei took the box of chocolates, smiled and said, "Then help me get a box of chocolates, just like that, thank you for your cooperation." ”

......

......

After repeated confirmation in the store, the three returned to the police car.

Officer Wang looked ahead blankly, and said in frustration: "This doesn't make sense, Forensic Doctor Liu did detect potassium cyanide in chocolate." ”

"And this box of chocolates was indeed bought by Zhang Sanmei and given to Yuan Yang, but how did she poison it? Could it be that we made a mistake?"

"Make no mistake, take this box of chocolates to Forensic Doctor Liu for testing!" Lu Weiwei opened the chocolate, took out one of the unwrapped papers, put it on the tip of her nose and sniffed it, ready to put it in her mouth.

Officer Wang was so frightened that he hurriedly stopped: "Lu Weiwei, you don't want to die, if there is potassium cyanide here, then won't you finish the calf?"

"It's not such an exaggeration, is it?" Lu Weiwei was a little unconvinced, and said, "Didn't you listen to the people in the store? This kind of chocolate sells a lot every day, and if it is poisonous, then won't this store be doomed? Can they still operate? Obviously, they can't?"

"But they're still doing it well, and no one has reported them for selling poisoned chocolate?"

"Could it be a random event?" Officer Wang's head became more and more confused the more he thought about it, and some of the six gods said without a master: "Maybe one of the boxes of chocolates happened to contain potassium cyanide, and it happened to be bought by Zhang Sanmei." ”

Then, in a daze, he gave it to Yuan Yang, who had a holiday with her, so Yuan Yang was poisoned and died directly after eating it. ”

"Not true. Gu Chen also denied Officer Wang's speculation, after all, this didn't sound very reliable.

Officer Wang looked at Gu Chen and asked weakly, "You said it wouldn't be the case, what kind of thing would it be?"

"Maybe the time of poisoning is not the time to buy chocolate, or it may not be the time of the party, but after Yuan Yang returned home, someone poisoned the chocolate. ”

Hearing Gu Chen say this, Lu Weiwei and Officer Wang were stunned.

The two looked at each other blankly, and then looked at Gu Chen, feeling that there seemed to be a little bit of reason.

"Senior Brother Gu. Lu Weiwei thought for a moment and hurriedly asked him: "You mean that Yuan Yang was poisoned with chocolate when he came home after getting drunk, and then blamed Zhang Sanmei?"

Gu Chen nodded: "It's possible." ”

"Oh my God!" Lu Weiwei couldn't believe it, her eyes widened and said, "According to Yuan Xiaomei's previous statement, she only left after she sent her sister Yuan Yang home." ”

"If you follow Senior Brother Gu's explanation, then isn't this Yuan Xiaomei the most suspicious?"

After thinking about it, Lu Weiwei instantly shook her head and said: "No, Yuan Xiaomei is Yuan Yang's sister, she has no reason to harm her sister, this is not quite in line with the motive of killing." ”

"Anything is possible. While driving, Gu Chen looked up at Lu Weiwei in the rearview mirror in the car, and said, "We can call up the surveillance near Yuan Yang's house, I noticed it before." ”

"Let's see if anyone else has been to Yuan Yang's house except Yuan Xiaomei after going home last night. ”

"If there is, it means that other people are suspicious, if not, it means that Yuan Xiaomei is suspicious, no matter who it is, the time of poisoning, I think it should be after Yuan Yang goes home. ”

......